Sheet metal drawing press



July 18, 1933. F. J. RODE 1,918,784

\ SHEET METAL DRAWING PRESS Filed April 11, 1932 ll Sheets-Sheet .l

July 18, 1933. F. J. RODE SHEET METAL DRAWING PRESS 11 Sheets-Sheet 2Filed April 11 July 18, 1933. F. J. RODE 1,918,784

SHEET METAL DRAWING PRESS' Filed ril 11 ll Sheets-Sheet 5 July 18, 1933.F. J. RODE SHEET METAL DRAWING PRESS Filed April' 11, 1932 11Sheets-Sheet 4 July 18, 1933, F. .1. RODE 1,918,784

' SHEET- METAL DRAWING PRESS Filed .April 11, 1932 July 18, 1933. F. J.RODE 1,918,784

SHEET METAL DRAWING PRESS Filed April 11, 1932 ll Sheets-Sheet 6 July18, 1933. F. J. RODE SHEET METAL DRAWING PRESS Filed .April 11,

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July 18, 1933. J ROBE 1,918,784

SHEET METAL DRAWING PRESS Filed April 11, 1932 ll Sheets-Sheet 1O July18, 1933. F. J. RODE 1,918,734

SHEET METAL DRAWING PRESS Filed .April 11, 1932 11 Sheets-Sheet 11Illluh 69 1 lllllll lllhllu ||||HH| IHUIHI Hllllll HHHIl Puenaa July 18,1933 1,918,784

UNITED STATES PATENT OFFICE raanmcn :r. Bonn, or cmcaeo, rumors SHEETMETAL nnawmc rimss Application filed April 11, 1882. Serial No. 004,217.

This invention relates in general to metal ing of this character backshafts, by utilizworkingpresses, but, more specifically to drawingpresses in which there is provided parallel crank shafts for operating aram or slide, and one of the objects of the invention is to provide/animproved construction and arrangement of gear transmission for drivinthe shafts through intermediate gearing. n the ordinary and directmeshing gears error will occur at the point of mesh, due to wear or fromother causes, resulting in throwing the'crank shafts out of time orsynchronism.

This can be obviated b increasing the di ameter of the direct mes inggears, and the larger the diameter, the lesswill be the error in timingcaused by such wear.

However, to employ gears of very large diameter in the ordinary directmeshing method, it would be necessary to space the parallel drivenshafts for a considerable distance to compensate such large diameters.This is impractical as the depth and width of the press must be keptwithin prescribed limits.

It is another object of the present invention to render it possible touse gears-of very large diameter, and at the same time not only maintainthe width and depth of the press within the prescribed limits, but alsomaintain the timing and synchronizing of the shafts. Furthermore, withthis invention the peripheral, extent of the actual meshing of the gearswill be increased, with the result that the extent of wear or mesh aboutthe eripheries of the large gears ma vary or considerable distancewithout a ecting the relative ositions of the crank shafts, and suchshafts will be always maintained in perfect alinement. 1

. A further object of the invention is to I vide in addition .to thegears of large diameter which are secured to the crank shafts,additional circumferential meshing of the gears by providingintermediate gears meshed to ether and which intermediate gears may ofany'diameter regardless of tllieftspace between the axes of the crank sa s.'

A further object a to eliminate in a gearing the main shafts of thepress as supports for the intermediate pinions or gears.

To the attainment of these ends and the accomplishment of other new anduseful objects as will appear, the invention consists in the features ofnovelty in substantially the construction, combination and arrangementof the several parts, hereinafter more fully described and claimed andshown in the accompanying drawings illustrating this invention, and inwhich Figure 1 is a front elevation of a sheet metal drawing presshaving earing constructed and arranged accor 'ng to the principles ofthis invention applied thereto.

Figure 2 is a view taken on line 2-2, Figure 1, on an enlarged scale andwith parts broken away. 1

Figure 3 is a sectional view taken on line 33, Figure 2.

Figure 4 is a view similar to Figure 2 of another form of gearing.

Figure 5 is a sectional view taken on line 55, Figure 4.

Figure 6 is a view similar to Figure 4 of another form of gearing. 1

Figure 7 is a sectional view taken on line 77, Figure 6.

Figure 8 is a view similar to Figure 6 of another form of gearing.

Figure 9 is an irregular, horizontal sectional view taken on line 99,Figure 8.

t Figure 10 is a view similar to Figure 8 of still another form ofgearing.

Figure 11 is an irregular sectional view taken on line 11-11, Figure 10.

Referring more particularly to the drawings and to the form of theinvention shown in Figures]. to 3, the numeral 15 designates generallythe bed of a press, 16 the uprights,

17 a mm or slide movable in guides 18 carried'by the uprights, all ofthe ordinary and wellknown construction.

J ournaled in suitablebearings in the up rights and extendingthereacross are spaced horizontal crank shafts 19-20. which areconnected by means of links 2122 with the ramor slide 17.

' A. power shaft 23 is also journaled in suit may be provided thereof.These pinion gears each mesh with a gear 30, which have secured theretoand for rotation therewith gears 31, the gears 31. and 30 bein mountedloosely upon the crank shaft 19. he gears 30 each mesh with another gear32, which latter is secured to a pinion gear 33 for rotation to etherand both the gears 32 and 33 are loose y mounted upon a portion of thecrank shaft 20. The ars 30 and 32 are preferably of the same iameter.

Secured to'the crank shaft 19 for rotation therewith is a gear 34 whichis of a ve large diameter and this gear 34 meshes wit the gear 33 whichis carried with the gear 32, so that upon the rotationof the gears 32-33they will be caused to rotate about the crank, shaft 20 and through themedium of the meshing of the gears 33 and 34 the crank shaft 19 will berotated.

Asthe power shaft 23 is rotated, the gears and 31 will be rotated and asthe gear 31 meshes with a gear 35, which latter is secured to the shaft20 for rotation therewith, it will be manifest that the shaft 20 willrotated, the gears 34 and 35 will rotate in the directions indicated bythe arrows in Figure 2, and as these gears 34 and 35 are of a very largediameter, they willoverlap, with the result that ver large diametergears or rotating the crank shafts 19 and20 while at the same time theaxes of rotation of the crank shafts will be maintained in roper spacedrelation with out increasing t e depth of the press.

With the lar e diameter gears it will be manifest that t e points ofmesh .of these gears with the intermediate pinions, and about theperipheries of the intermeshing gears will be increased-or extended sothat any wear or error caused by the wear of the intermeshing teeth inthe direct meshin rs of smaller diameters will be extende or aconsiderable distance about the riphcries of the larger gears allwithout a ecting the relative positions of the crank shafts 19 and 20and without the necessity of unduly spacing these shafts as would benecessary with the ordinary direct meshing gears. The crank shafts alsoserve as the supports about which the'intermediate gears rotate, therebyobviating the necessity of any additional or back shafts for the gears.

In. the form of the invention shown in Fi res'4 and 5' the ower shaft 36is proviii? P d with a single pinion 37 secured there to and serves todrive the shafts from a point intermediate the ends of the shafts. Thepinion 37 meshes with a gear 38 which is secured to a shalt 39 forrotation therewith, and this shaft 39 is journaled in suitable bearingsin the uprights 16. Secured to the ends of the shaft 39 for rotationtherewith are pinion gears 40 arranged adjacent each of the uprights 16.The gears40 mesh with gears 41 of large diameters and these gears 41 aresecured to a crank shaft 42 journaled in the uprights 16.

The shaft 42 is connected by links 43 to the slide or ram 44. Secured tothe other crank shaft 45 are gears 46 of large diameters locatedadjacent the ends of the shaft, and these gears 46 overlap the gears 41.Pinion gears 47 are secured to a shaft 48 for rotation therewith and theshaft 48 is journaled in suitable bearings in the uprights 16 and ifdesired in intermediate bearin s 49.

ecured to the shaft 48 for rotation therewith and so as to'mesh with thegear 38 is another gear 50, the gears 3850 being preferably ofsubstantially the same diameter. With this form of gearing when theshaft 36 is rotated through the medium of a pulley 51 secured thereto,the gear 37 meshing with the gear 38 will rotate the shaft 39 and with'it the crank shaft 42. The gear 38 meshing with the gear 50 will causethe shaft 48 to be rotated and with it the pinion gears 47.

These gears in turn meshing with the gears 46 will rotate the latter,thereby causing the crank shaft 45 to rotate and this crank shaft 45 isconnected by means of links 51 with the slide or ram 44. It-will bemanifest that the crank shafts 39 and 48 will be rotated in unisonandthat a reciprocatory movement will be imparted to the ram or slide44. By the arrangement of the overlapping gears 46 and 41, it will bemanifest that gears of extremely large diameter may be employed, therebyincreasing the extent of the pei'i hcry of the gears 46-41, with theresult t at there will be an extended portion of the per phery of thelarge gears in mesh with the pinion gears 40-47, so that any error whichmay occur by reason of the wear of the .intermeshing teeth will beextended over a, greater area or surface of the peripher of the largegears than would be the case w ere two large gears or gears ofsubstantially the same diameter intermesh with each other.

In the form of the invention shown in Figures 6 and 7, there is anotherform of caring for accomplishing the same result an; in this instancethe power shaft 52 is rotated from the pulley 53, the shaft beingjournaled in suitable bearings preferably in the uprights 16 and also inintermediate bearin 54.

Secured to the shaft 52 for rotat1on therewith and adjacent the endsthereof are pinion gears 55 for driving the crank shafts 56-57 were fromboth ends thereof, the crank shafts being connected by means of suitablelinks 58 with the ram or slide 59. The pinion gears 55- mesh withintermediate gears 60 that are.

. gears 63 of comparatively large diameters and .and secured to theshaft 79 for rotation the gears 6063 overlap each other. gears 60 meshwith gears 64 preferably of the same diameter as the gears 60 and thesegears 64 are secured to a shaft 65 for rotation therewith. Carried bythe shaft 65 are pinion gears 66 which are located adjacent the gears64, and these gears 66 mesh with gears 67 ad jacent the ends of thecrank shafts 57, the gearings 67 being of a comparatively large diameterand overlapping the gears 64 so that the circumferential extent ofengagement of the gears 63-67 with the respective gears 62-66 will beincreased beyond the extent of mesh of two gears of the same and ofcomparatively small diameters.

In the form of the invention shown in Figures 8 and 9, the power shaft68 sis driven from the center by means of a pulley 69 and is journaledin suitable bearings in the uprights 16 and intermediate bearings 70.Secured to'the ends of the shaft 68 are pinion gears 71 which mesh withgears 72 secured to an intermediate shaft 73 for rotation therewith.Secured also to the shaft 73 for rota tion therewith are pinion gears 74which mesh with gears 75 of large diameter and which gears 75 aresecured to the crank shaft 76, the latterbeing connected by links 77with the ram or slide 78.

The other crank shaft 79 is connected by means of links 80 with theslide or ram 78,

' through the medium of the gear 75 and also to the crank 79 through themedium of the.

intermeshing gears 7172-73748281. causing the crank shafts to rotate intimed relation and synchronism and in the directions indicated by thearrows in Figure 8'.

In the form of the invention shown in Figures 10 and 11, the crankshafts 8485 are driven from one end from the power shaft 86 on whichlatter is secureda pinion gear 87 for rotation therewith. This gear 87meshes directly with a gear 88 of large diameter andis secured to thecrank shaft 84 for rotation The therewith. The crankshafts 84 and 85 areconnected by means of the links 89 with the ram or slide 90. Motion isimparted to the crank shaft 85 through the medium of an idle gear 91rotatably mounted upon a stub shaft 92, and which gear 91 meshesdirectly with the gear 87. The gear 91 also meshes with a gear 93 oflarge diameter and which is secured to the crank shaft 85 for rotationtherewith. The gears 88 and 93 are of the same diameter and rotate inthe directions indicated by the arrows in Figure 10.

In each of the forms of the invention it will be apparent that gears oflarge diameter are secured to the crank shafts and are out of mesh witheach other, and that pinions are provided which are individual to andmesh with the gears on the convex shafts. Intermediate gears are securedto the pinion shafts and mesh with each other resulting -in the crankshafts being rotated in unison and at the same time providin an extendedcircumferential engagement 0 the teeth of the intermeshing gears. Motionis transmitted by means of driving power being applied to one of theintermediate gears through the medium of a driving pinion meshing withone of said intermediate gears.

With this invention it will be manifest that the two parallel crankshafts are rotated through the intermediate gearing and these gearingsoperate to keep the shafts in unison.

By the arrangement shown, the gears which are secured to the respectiveshafts to rotate them can be of a lar e diameter than possible if thegears whic are secured to the respective shafts directly mesh with eachother.

With this construction all error in meshing of the gears at the pointwhere they meet will be eliminated and the effect upon the centers ofthe crank shafts will also be eliminated, thereby rendering it possibleto maintain the cranks in perfect alinement.

Furthermore, the intermediate gearing will besupported by the mainshafts of the press, with the result that the back shafts of the presswill be eliminated as a support for the intermediateand driving'pinions.

Throughout the claims the term bull gear will be employed, to designatethe gears of large diameter which are secured to the crank shafts. Insome instances this term applies to the gears whose pitch line radius isof a length greater than the distance be,- tween the axes of the crankshafts arid a medial plane intermediate the axes of the crank shafts.

While the preferred forms ofthe invention have been herein shown anddescribed it is to be understood that various changes may be made in thedetails of construction and in the combination and arrangement of theseveral arts, within the scope of the claims,

Ill

without departing from the spirit of-"this in-- vention.

What is claimed as new is 1. In a metal drawing press, a rec procableram, spaced parallel crank shafts, links connecting the ram with thecrank shafts, overlapping gears of large diameters connected with therespective shafts, a power shaft, and intermediate gears connecting thepower shaft with the first recited gears for rotating the crank shafts,the said intermediate gearing being supported by and rotatable upon thesaid crank shafts.

2. In a metal drawing press a rec procable ram, spaced parallel crankshafts, llnks connecting the ram with said crank shafts, bull gearssecured to each of the shafts, the pitch line radii of said bull gearsbe1ng greater than the distance between the axes of the shafts and amedial plane between thesaid axes, intermediate gears between each ofthe bull gears and the opposite crank shaft, said intermediate gearsbeing rotatably mounted upon the crank shafts, a power shaft, and a gearconnection between the power shaft and one of the aforesaid gears.

3. In a metal drawing press, spaced parallel crank shafts, areciprocable ram, links connecting the ram with the crank shafts, a bullgear secured to each of the shafts for rotating them, pinion gearsloosely mounted upon each of the crank shafts and meshing with the bullgear of the other shaft, gear connections between said pinions forrotating them, and a gear meshing with one of the gears of saidconnections for rotating them.

4. In a metal drawing press, spaced parallel crank shafts, areciprocable ram, links connecting the ram with said crank shafts, andmeans for rotating the cranks from both ends thereof, the rotating meansat each end of the shaft comprising a bull gear secured to each shaft,pinion gears loosely mounted upon each shaft and meshing with the bullgear of the other shaft, gear connections be tween the pinions forrotating the pinions, and a gear meshing with one of the gears of saidconnection for rotating them.

5 In a metal drawing press, spaced parallel crank shafts, a reciprocableram, links connecting theram with said crank shafts, means for rotatingthe cranks from both ends thereof, the rotating means at each end of theshaft comprising a bull gear secured to each" shaft,

inion gears loosely mounted upon each shaft and meshing with the bullgear of the other shaft, gear connections between the pinions forrotating the pinions,

and'a gear meshing with one of the gears of saidconnection for rotatingthem, the gears of the said gear connection being mounted upon androtatable about the respective crank shafts.

6. In a metal drawing press, spaced parallel crank shafts, areciprocable ram, links connecting the ram with said crank shafts, abull gear connected with each of said shafts, said bull gears beingdisposed adjacent but laterally spaced from each other, a

pinion loosely mounted upon each of the crank shafts and meshing withthe bull gear of the other shaft, gear connection between the pinions,said gear connection being disposed in the space between the bull gears,

and means for imparting motion to said gear connection.

7. In a metal drawing press, spaced parallel crank shafts, areciprocable ram, links connecting the ram with said crank shafts, abull gear connected with each of said shafts, said bull gears beingdisposed adjacent but laterally spaced from each other, a pinion looselymounted upon each of the crank shaftsand meshing with the bull gear ofthe other shaft, gear connection between the pinions, said gearconnection being disposed in the space between the bull gears, and meansfor imparting motion to said gear connection, the pitch line radii ofthe bull gears being greater than the distance between the axes of thecrank shafts and a medial plane between said axes.

8. In a metal drawing press, a reciprocable ram, spaced parallel crankshafts, links connecting the ram with said shafts, a driving gearsecured to each of the crank shafts and out of mesh with each other,pinions individual to and meshing with each of the driving gears fordriving them, intermediate gears connected respectively to the pinionshafts, said intermediate gears meshing with each other whereby thecrank shafts will be rotated in unison, and means for driving one ofsaid intermediate gears, certain of said intermediate gears beingsupported by the said crank shafts for free rotation with respectthereto.

FRIEDRICH J. RODE.

' DISCLAIMER 1,918,784.-Fredrich J. Rode, Chica 0, I11. SHEET METALDRAWING PREss.

ent dated July 18, 1933.

Pat-

isclaimer filed Feb. 21, 1945, by the inventor;

the licensee, E. W. Bliss Company, approving and consenting. Herebyenters this disclaimerto claims 2, 5, and 7 of the specification.

[Qflic'ial Gazette March 2?, 1945;]

